The aiming black is 36" on the 600 target and it extends to the 7 ring.

The bull looks the same against the front post as a 6" bull at 100 yards.

I have learned that with sight alignment and trigger control - iron sights can be very effective. BUT - very small errors in sight alignment can have huge affects at distance. .008" error at your nose is 6" at 600 yards(1moa)

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I have to tip my hat to you. I have enough trouble seeing my sights, let alone a 600 yard target. I've come to terms with the fact that my days of using iron sights are behind me. I wouldn't however mind giving that 600 yard range a try with my bolt guns, scoped of course.
Don

That would also work once I get some loads worked up of sufficient bullet weight. With the 1-7" twist rate I should be able to stabilize bullets of a decent size. I guess in my case the major limitation in bullet size would be the magazine.
Don

That would also work once I get some loads worked up of sufficient bullet weight. With the 1-7" twist rate I should be able to stabilize bullets of a decent size. I guess in my case the major limitation in bullet size would be the magazine.
Don

fyi - for 1:7 AR the magic load that a whole bunch of service rifle and match rifle shooters use is a 75-80 grain VLD like the Berger, Hornady A-max or SMK with varget or RE- 15 or N140 at about 2700 fps.

I use the 75 Amax with 24.5 RE -15 seated to .015" from lands.

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